Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1983-09-21
1986-02-04
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324 74, 338202, 338171, G01R 2702, H01C 112
Patent
active
045688761
ABSTRACT:
A method for testing the correct position of a wiper of an electric potentiometer and an electric potentiometer for performing the method are proposed. The electric potentiometer includes a wiper lever with brush wipers, which upon a rotational movement about a pivot shaft brush over two work sections of an electrically conductive layer applied to a carrier plate. One of the work sections communicates on one side with a connection layer and on the other with a grounded connection layer, which the other work section communicates with a pickup connection layer. Respective testing faces are provided in the extension of the permissible movement paths of the brush wipers on the work sections, these testing faces being embodied as electrically non-conductive and in a testing position of the wiper lever being crossed by the wiper lever. In the event of an incorrect position, a portion of the brush wipers in the testing position of the wiper lever is located outside the test faces, and the voltage which can be picked up at the pickup connection layer is then zero.
REFERENCES:
patent: 3343115 (1967-09-01), Greenwood
Eisenzopf Reinhard J.
Greigg Edwin E.
Harvey Jack B.
Robert & Bosch GmbH
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